Waitzman described an improvement of his protocol in RFC 2549, IP over Avian Carriers with Quality of Service (1 April 1999). Later, in RFC 6214—released on 1 April 2011, and 13 years after the introduction of IPv6—Carpenter and Hinden published Adaptation of RFC 1149 for IPv6.[1]

IPoAC has been successfully implemented, but for only nine packets of data, with a packet loss ratio of 55% (due to operator error),[2] and a response time ranging from 3000 seconds (≈54 minutes) to over 6000 seconds (≈1.77 hours). Thus, this technology suffers from poor latency. Nevertheless, for large transfers, avian carriers are capable of high average throughput when carrying flash memory devices, effectively implementing a sneakernet. During the last 20 years, the information density of storage media and thus the bandwidth of an avian carrier has increased 3 times as fast as the bandwidth of the Internet.[3] IPoAC may achieve bandwidth peaks of orders of magnitude more than the Internet when used with multiple avian carriers in rural areas. For example: If 16 homing pigeons are given eight 512 GB SD cards each, and take an hour to reach their destination, the throughput of the transfer would be 145.6 Gbit/s, excluding transfer to and from the SD cards.

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On 28 April 2001, IPoAC was actually implemented by the Bergen Linux user group, under the name CPIP (for "Carrier Pigeon Internet Protocol").[4] They sent nine packets over a distance of approximately five kilometers (three miles), each carried by an individual pigeon and containing one ping (ICMP Echo Request), and received four responses.

This real life implementation was mentioned by the French MP Martine Billard in the French Assemblée Nationale,[5] during debates about Hadopi.
The implementation was noted in the song "Paper Pings" by Steve Savitzky.[6]

Rafting photographers already use pigeons as a sneakernet to transport digital photos on flash media from the camera to the tour operator.[7] Over a 30-mile distance, a single pigeon may be able to carry tens of gigabytes of data in around an hour, which on an average bandwidth basis compares very favorably to current ADSL standards, even when accounting for lost drives.[8]

Inspired by RFC 2549, on 9 September 2009, the marketing team of The Unlimited, a regional company in South Africa, decided to host a tongue-in-cheek "Pigeon Race" between their pet pigeon "Winston" and local telecom company Telkom SA. The race was to send 4 gigabytes of data from Howick to Hillcrest, approximately 60 km apart. The pigeon carried a microSD card and competed against a Telkom ADSL line.[9] Winston beat the data transfer over Telkom's ADSL line, with a total time of two hours, six minutes and 57 seconds from uploading data on the microSD card to completion of download from card. At the time of Winston's victory, the ADSL transfer was just under 4% complete.[10][11]

In November 2009 the Australian comedy/current-affairs television program Hungry Beast repeated this experiment. The Hungry Beast team took up the challenge after a fiery parliament session wherein the government of the time blasted the opposition for not supporting telecommunications investments, saying that if the opposition had their way, Australians would be doing data transfer over carrier pigeons. The Hungry Beast team had read about the South African experiment and assumed that as a developed western country, Australia would have higher speeds. The experiment had the team transfer a 700MB file via three delivery methods to determine which was the fastest: A carrier pigeon with a microSD card, a car carrying a USB Stick, or a Telstra (Australia's largest telecom provider) ADSL line. The data was to be transferred from Tarana in rural New South Wales to the western-Sydney suburb of Prospect, New South Wales, a distance of 132 km by road. Approximately halfway through the race the internet connection unexpectedly dropped and the transfer had to be restarted. The pigeon won the race with a time of approximately 1 hour 5 minutes, the car came in second at 2 hours 10 minutes, while the internet transfer did not finish, having dropped out a second time and not coming back. The estimated time to upload completion at one point was as high as 9 hours, and at no point did the estimated upload time fall below 4 hours.[12]

A similar "Pigeon Race" was conducted in September 2010 by tech blogger (trefor.net) and ISP Timico CTO Trefor Davies with farmer Michelle Brumfield in rural Yorkshire, England: delivering a five-minute video to a BBC correspondent 75 miles away in Skegness. The pigeon was pitted (carrying a memory card with a 300MB HD video of Davies having a haircut) against an upload to YouTube via British Telecom broadband; the pigeon was released at 11.05 am and arrived in the loft one hour and fifteen minutes later while the upload was still incomplete, having failed once in the interim.[13][14][15]